Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f8d497cea7cdb6b…

MALICIOUS

PDF

33.2 KB Created: 2021-07-05 00:01:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 362dedbeac37d96f4ec09ccb4bd216fe SHA-1: 9bc283b5d83efbd0288c036450a2b0f1b76ff788 SHA-256: 2f8d497cea7cdb6ba0291f4970f1c370c82dcb3e7810d6e994780b67e80a51a2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/how-to-hack-any-roblox-account-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-script_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-rules_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A72 22312 bytes
SHA-256: af17023a6dc416fccf143411a4f49975d12ec297f500ca8412ca1833393c5b07
font_01_sfnt_off00005c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C15 19244 bytes
SHA-256: 6d65792bfd45bcee93e0a3a5c2653c8cc75893afabb3de85f48b4c2dd1390979

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